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Other (7066), Pre (189), Power (67), Rectifier (19)
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PC 1/50

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BrandPhilips
ClassRF Power Pentode

Construction

Primary TypePentode
EnvelopeGlass
Sections1

Filament / Heater

MaterialOxide coated

Absolute Maximum Ratings

Plate Voltage1000 V
Plate Dissipation30 W
Grid 2 Voltage300 V
Grid 1 Voltage-120 V

Audio Performance

Key Features
  • Oxide coated cathode
  • Directly heated
  • H.F. amplifier

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
H.F. class C telegraphy (Ig1 > 0)1000V1500--80mA
H.F. class C telegraphy (Ig1 = 0)1000V1500--60mA
H.F. class B telephony1000V---50mA

Application Notes

Used as High Frequency Amplifier and in telegraphy class C or telephony class B modes.

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